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Unit 3B Study Guide



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

In 35 ÷ 7 = 5, what is the 35 called?
a.
dividend
b.
factor
c.
divisor
d.
quotient
 

 2. 

Enrique is decorating a bulletin board. He has 28 triangles and wants to put them in 4 rows. Which picture can be used to find how many triangles he should put in each row?
a.
unit_3b_study_files/i0030000.jpg
unit_3b_study_files/i0030001.jpg
unit_3b_study_files/i0030002.jpg
unit_3b_study_files/i0030003.jpg
c.
unit_3b_study_files/i0030004.jpg
unit_3b_study_files/i0030005.jpg
unit_3b_study_files/i0030006.jpg
b.
unit_3b_study_files/i0030007.jpg
unit_3b_study_files/i0030008.jpg
unit_3b_study_files/i0030009.jpg
unit_3b_study_files/i0030010.jpg
d.
unit_3b_study_files/i0030011.jpg
unit_3b_study_files/i0030012.jpg
unit_3b_study_files/i0030013.jpg
unit_3b_study_files/i0030014.jpg
 

 3. 

Draw a picture to solve the problem.
A planetarium has 24 seats, with the same number of seats in each of 3 rows. How many seats are in each row?
a.
21 seats
b.
15 seats
c.
8 seats
d.
5 seats
 

 4. 

Draw a picture to solve the problem.
Mai bought a set of 48 glasses at a yard sale. They came in cartons with 8 glasses each. How many cartons did Mai buy?
a.
56 cartons
b.
40 cartons
c.
7 cartons
d.
6 cartons
 

 5. 

Draw a picture to solve the problem.
The art museum is holding a water color show. There are 24 pieces of art that need to be displayed. How many walls are needed if 6 pictures are placed on each wall?
a.
4 walls
b.
5 walls
c.
18 walls
d.
30 walls
 

 6. 

Which number sentence is part of the fact family for 7, 5, and 35?
a.
35 – 5 = 30
b.
35 ´ 7 = 245
c.
35 ÷ 7 = 5
d.
5 ´ 5 = 25
 

 7. 

Which of the following is NOT part of the same fact family?
a.
2 ´ 5 = 10
b.
10 – 2 = 8
c.
5 ´ 2 = 10
d.
10 ÷ 5 = 2
 

 8. 

If you know that 6 ´ 8 = 48, which division fact do you know?
a.
42 ÷ 6 = 7
b.
48 ÷ 8 = 6
c.
54 ÷ 6 = 9
d.
56 ÷ 8 = 7
 

 9. 

Tung planted tulips in the garden in the array shown below. Which number sentence does NOT belong in the fact family represented by the array?
unit_3b_study_files/i0100000.jpg
unit_3b_study_files/i0100001.jpg
unit_3b_study_files/i0100002.jpg
unit_3b_study_files/i0100003.jpg
a.
2 ´ 14 = 28
b.
28 ÷ 4 = 7
c.
28 ÷ 7 = 4
d.
4 ´ 7 = 28
 

 10. 

Tappers Dance Club held their yearly recital. There were 32 dancers altogether. They were in 4 lines. Which number sentence does NOT help you find how many dancers were in each line?
a.
28 ÷ 4 = 7
b.
4 ´ 8 = 32
c.
8 ´ 4 = 32
d.
32 ÷ 4 = 8
 

 11. 

Which multiplication fact can help you find unit_3b_study_files/i0120000.jpg?
a.
7 ´ 6
b.
7 ´ 7
c.
7 ´ 8
d.
7 ´ 9
 

 12. 

Divide.
28 ÷ 4
a.
8
b.
7
c.
6
d.
5
 

 13. 

Eight friends equally shared the cost of renting a boat for the afternoon. The total cost was $48. What did each person pay?
a.
$40
b.
$7
c.
$6
d.
$5
 

 14. 

Divide.
unit_3b_study_files/i0150000.jpg
a.
16
b.
8
c.
4
d.
3
 

 15. 

A magazine subscription costs $27 a year. If 9 magazines are delivered during the year, what is the cost of each magazine?
a.
$243
b.
$12
c.
$9
d.
$3
 

 16. 

Suppose 36 students form 6 teams with an equal number of students on each team. How many players are on each team?
a.
5 players
b.
6 players
c.
30 players
d.
42 players
 

 17. 

Which quotient is less than 36 ÷ 6?
a.
36 ÷ 9
b.
36 ÷ 6
c.
36 ÷ 4
d.
36 ÷ 3
 

 18. 

Which multiplication fact can help you find unit_3b_study_files/i0190000.jpg?
a.
1 ´ 8
b.
8 ´ 8
c.
0 ´ 0
d.
8 ´ 0
 

 19. 

Find the quotient.
unit_3b_study_files/i0200000.jpg
a.
0
c.
5
b.
1
d.
cannot be done
 

 20. 

Which comparison is TRUE?
a.
7 ÷ 7 < 8 ÷ 8
c.
7 ÷ 1 < 0 ÷ 7
b.
7 ÷ 1 > 7 ÷ 7
d.
0 ÷ 7 > 7 ÷ 7
 

 21. 

Sergio had 5 posters. He passed them out evenly to his 5 friends. How many posters did each friend get?
a.
0 posters
b.
1 poster
c.
5 posters
d.
25 posters
 

 22. 

Write a multiplication story for unit_3b_study_files/i0230000.jpg.
a.
Vin has 20 goldfish to put in 4 bowls. How many fish will he put in each bowl?
b.
Vin has 5 goldfish in one bowl and 4 goldfish in the other. How many goldfish does he have in all?
c.
Vin has 20 goldfish. He put 5 in one bowl. How many goldfish does he have left to put in the other bowl?
d.
Vin has 5 goldfish bowls with 4 fish in each bowl. How many fish does he have in all?
 

 23. 

Adriana wrote the following multiplication story. Which fact did she use to write her story?
Yuji bought 2 bags of oranges. Each bag had 8 oranges. How many oranges did he buy in all?
a.
2 ´ 8
b.
2 ´ 6
c.
8 ´ 8
d.
2 ´ 2
 

 24. 

Manuel wrote the following division story. Which fact did he use to write his story?
Tiana planted 40 tulips. She put 8 tulips in each row. How many rows of tulips did she plant?
a.
8 ÷ 8
b.
40 – 8
c.
5 ÷ 5
d.
40 ÷ 8
 

 25. 

Danielle wrote the following multiplication story. Which fact did she use to write her story?
A water molecule is made with 1 oxygen atom and 2 hydrogen atoms. Mr. Tiffany's class is making water molecule models out of styrofoam balls. If they use 2 small styrofoam balls to represent the hydrogen atoms, how many small styrofoam balls will they need to make 4 water molecules?
a.
1 ´ 2
b.
2 ´ 2
c.
4 ´ 2
d.
1 ´ 4
 



 
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